Brissett declined his $2.5 million player option with the Celtics on Sunday, Keith Smith of Spotrac.com reports.

Brissett closed Saturday's 106-93 victory over the Cavaliers in Game 3 of the Eastern Conference Semifinals with no counting stats in one minute.

Brissett (illness) isn't listed on Boston's injury report ahead of Friday's game against the Hornets, Taylor Snow of the Celtics' official site reports.

Brissett (illness) has been ruled out for Thursday's game against the Knicks, Taylor Snow of the Celtics' official site reports.

Brissett is listed as questionable for Thursday's game versus the Knicks due to a non-COVID illness, Jared Weiss of The Athletic reports.

Brissett will come off the bench for Monday's game against Detroit, Sean Grande of NBC Sports Boston reports.

Brissett will start Sunday's game against the Wizards, Sean Grande of NBC Sports Boston reports.

Brissett racked up three points (1-2 FG, 0-1 3Pt, 1-2 FT), seven rebounds and one assist across 19 minutes during Monday's 121-99 victory over the Trail Blazers.

Brissett (personal) is available for Friday's game against the Mavericks.

Brissett is listed as questionable for Friday's game versus the Mavericks due to personal reasons, Taylor Snow of the Celtics' official site reports.